GlsRSOLoader API  1.3.1
rso_interface_4.h
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1 /*! \file
2  \brief Defines the RSO interface v4, which extends v3 to add \link disti::RSOInterface4#ResourceObserver ResourceObserver\endlink
3 
4  \par Copyright Information
5 
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38 
39 */
40 #ifndef INCLUDED_RSO_INTERFACE_4_H
41 #define INCLUDED_RSO_INTERFACE_4_H
42 
43 #include "rso_interface_3.h"
44 
45 namespace disti
46 {
47 ////////////////////////////////////////////////////////////////////////////////
48 // In order for the RSO to be discovered in a .DLL or .so file,
49 // The following "C" funtions need to be defined.
50 // They are only comments here.
51 ////////////////////////////////////////////////////////////////////////////////
52 // RSOInterface1* CreateRSOInterface4_ClassNameHere()
53 // Optionally:
54 // const char* GlsDefaultClassName()
55 ////////////////////////////////////////////////////////////////////////////////
56 
57 /** The RSOInterface4 class defines an abstract interface to an RSO instance.
58  */
60 {
61 public:
62  /** Class used to call a callback method that takes a DistiAttributeBase */
64  {
65  public:
66  /** Called when the resource value has changed
67  * \param handle the handle to the resource that changed
68  */
69  virtual void Call( ResourceHandle handle ) = 0;
70 
71  /** deletes the observer */
72  virtual void Destroy() = 0;
73 
74  protected:
75  virtual ~ResourceObserver() {}
76  };
77 
78  /// Type for unique identifiers
79  typedef unsigned int CallbackID;
80 
81  /** Register a resource observer to be notified when a resource changes *
82  * \param resourceHandle the resource handle
83  * \param observer the observer to be notified. The RSO takes ownership of the observer and will call Destroy to delete it when needed.
84  * \return the id used to unregister the observer in combination with the original resourceHandle
85  */
86  virtual CallbackID RegisterResourceObserver( ResourceHandle resourceHandle, ResourceObserver* observer ) = 0;
87 
88  /** Unregister a resource observer
89  * \param resourceHandle the resource handle used to register the observer
90  * \param id the id used to register the resource observer
91  */
92  virtual void UnregisterResourceObserver( ResourceHandle resourceHandle, CallbackID id ) = 0;
93 
94 protected:
95  ////////////////////////////////////////////////////////////////////////////////
96  /// Protected destructor so it can't be deleted directly.
97  ////////////////////////////////////////////////////////////////////////////////
98  virtual ~RSOInterface4() {}
99 };
100 
101 } // end namespace disti
102 
103 #endif
virtual ~RSOInterface4()
Protected destructor so it can't be deleted directly.
Definition: rso_interface_4.h:98
virtual CallbackID RegisterResourceObserver(ResourceHandle resourceHandle, ResourceObserver *observer)=0
virtual void UnregisterResourceObserver(ResourceHandle resourceHandle, CallbackID id)=0
Definition: rso_interface_4.h:63
Definition: rso_interface_3.h:60
virtual void Call(ResourceHandle handle)=0
Defines the RSO interface v3, which extends v2 to add multitouch support through the HandleMultiTouch...
Definition: rso_interface_4.h:59
unsigned int CallbackID
Type for unique identifiers.
Definition: rso_interface_4.h:79
Definition: rso_interface_1.h:46